iptables firewall script 0.5

iptables firewall script is an Linux firewall based on the iptables software.

Sample:

######## START FUNCTIONS #########
scripthelp () {
cat t restart > /dev/null 2>&1
# Check every 5 minutes:
# */5 * * * * /path/to/this/script restart > /dev/null 2>&1

OLDIP=`$PROG -n -L INPUT| grep 6005|grep udp| cut -b55-|cut -f1 -d u`

case $1 in

start)
if [ -z "$OLDIP" ];
then
echo -n "Starting firewall..."
fireme
elif [ $IP = $OLDIP ];
then
echo "FIREWALL IS UPDATED."
fi
;;
restart)
echo -n "Restarting firewall..."
if [ -z "`$PROG -n -L INPUT| grep 6005`" ];
then
fireme
elif [ $IP = $OLDIP ];
then
echo "FIREWALL IS UPDATED."
else
for i in DENIED_PORT_PRIV DENIED_PORT_UNPRIV_TCP DENIED_PORT_UNPRIV_UDP ONTHEFLY
do
$PROG -F $i
$PROG -F INPUT
$PROG -F FORWARD
$PROG -X $i
done
fireme
fi
;;
refresh)
echo -n "Resetting firewall..."
if [ -z "`$PROG -n -L INPUT| grep 6005`" ];
then
fireme
else
for i in DENIED_PORT_PRIV DENIED_PORT_UNPRIV_TCP DENIED_PORT_UNPRIV_UDP ONTHEFLY
do
$PROG -F $i
$PROG -F INPUT
$PROG -F FORWARD
$PROG -X $i
done
fireme
fi
;;
stop)
for i in DENIED_PORT_PRIV DENIED_PORT_UNPRIV_TCP DENIED_PORT_UNPRIV_UDP ONTHEFLY
do
$PROG -F $i
$PROG -F INPUT
$PROG -F FORWARD
$PROG -X $i
done
echo "Firewall stopped...[ [32;01mOK [0m]"
;;
*)
echo
scripthelp
;;
esac
fi

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